In (info "(org) Editing and debugging formulas"): `<TAB> (`org-table-fedit-lisp-indent')' Pretty-print or indent Lisp formula at point. When in a line containing a Lisp formula, format the formula according to Emacs Lisp rules. Another <TAB> collapses the formula back again. In the open formula, <TAB> re-indents just like in Emacs Lisp mode.
What does the `open formula' mean? I've searched the Org manual/FAQ and web, and I only found this: http://docs.oasis-open.org/office/v1.2/os/OpenDocument-v1.2-os-part2.html But it seems that the `open formula' doesn't mean this. -- Best regards, Xue Fuqiao. http://www.emacswiki.org/emacs/XueFuqiao